| 摘要 |
PROBLEM TO BE SOLVED: To shield UV up to a long wavelength range of UV by forming a UV absorbing layer having amide bonds and Si-O bonds on a transparent substrate. SOLUTION: A UV absorbing layer of 0.15-50μm thickness having amido bonds and Si-O bonds in a molar ration of 1:(1-50) is formed on a transparent substrate of glass, etc., to obtain the objective UV absorbing transparent plate. The UV absorbing layer is formed by allowing an aminosilane compd. represented by formula I to react with a compd. having a benzotriazole skeleton represented by formula II or a compd. having a benzophenone skeleton represented by one of formulae III-VI. In the formula I, R<1> is a 1-10C alkylene or (CH2 )m -NH (1<=m<=4), R<2> is H, OH, a 1-10C alkyl, etc., and n>=0. In the formula II, R<3> is H, a halogen or a 1-10C alkyl, R<4> is H or a 1-10C alkyl and R<5> is a 1-10C alkylene, etc. In the formulae III-VI, R<6> is a 1-10C alkylene, etc., each of R<7> and R<8> is OH, a 1-10C alkyl, etc., 0<=m<=3 and 0<=n<=3.
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